Ezra 10:3, 9

So now let us make a covenant with our God to put away all the wives and their children, according to the counsel of my lord and of those who tremble at the commandment of our God; and let it be done according to the law.

So all the men of Judah and Benjamin assembled at Jerusalem within the three days. It was the ninth month on the twentieth of the month, and all the people sat in the open square before the house of God, trembling because of this matter and the heavy rain.